Delete parameter in data model

Can I delete parameter in data model on ACS version 1.1.3?

When I refresh “InternetGatewayDevice.DeviceInfo.AdditionalHardwareVersion” and “InternetGatewayDevice.DeviceInfo.AdditionalSoftwareVersion” device return an Error “Invalid parameter name”. But i can see this parameter in tcpdump from device with tag: 1. I have a problem with two parameters only. I want to disable or remove this parameters on ACS. I want to use refresh like this “InternetGatewayDevice.DeviceInfo.*” but i can’t.

You can either patch to the code to ignore those params when doing a GetParameterName, or what should happen is the vendor should fix the issue.